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Arthur J. Gallagher & Co.

AJG
Exchange
NYSE
Industry
Insurance Agents, Brokers & Service
SEC CIK
0000354190

In the last 90 days, Arthur J. Gallagher & Co. insiders filed 0 open-market purchases and 4 sales; 1,295 institutions reported holding it in 13F filings for Q2 2026, worth $54.7B in total; no superinvestor holds it.

13F holders, Q4 2025

Institutional positions in Arthur J. Gallagher & Co. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
1,299
−14 vs. Q3 2025
Shares held
234.2M
+9.18M (+4.1%) vs. Q3 2025
Total value
$60.6B
−$9.03B (−13.0%) vs. Q3 2025
New holders
159
393 more added
Sold out
173
566 more reduced

28 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting AJG on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2025: 1,299 institutions
Q1 2021: 732 institutionsQ2 2021: 779 institutionsQ3 2021: 775 institutionsQ4 2021: 854 institutionsQ1 2022: 817 institutionsQ2 2022: 823 institutionsQ3 2022: 865 institutionsQ4 2022: 921 institutionsQ1 2023: 951 institutionsQ2 2023: 976 institutionsQ3 2023: 999 institutionsQ4 2023: 1,082 institutionsQ1 2024: 1,130 institutionsQ2 2024: 1,153 institutionsQ3 2024: 1,203 institutionsQ4 2024: 1,325 institutionsQ1 2025: 1,359 institutionsQ2 2025: 1,379 institutionsQ3 2025: 1,341 institutionsQ4 2025: 1,299 institutionsQ1 2026: 1,248 institutionsQ2 2026: 1,295 institutions
Value heldQ4 2025: $60.6B
Q1 2021: $20.6BQ2 2021: $24.6BQ3 2021: $26.3BQ4 2021: $30.1BQ1 2022: $31.0BQ2 2022: $29.1BQ3 2022: $31.2BQ4 2022: $34.1BQ1 2023: $34.7BQ2 2023: $39.9BQ3 2023: $42.3BQ4 2023: $41.9BQ1 2024: $46.5BQ2 2024: $49.1BQ3 2024: $52.8BQ4 2024: $65.9BQ1 2025: $79.0BQ2 2025: $72.9BQ3 2025: $69.7BQ4 2025: $60.6BQ1 2026: $49.7BQ2 2026: $54.7B
Institutions holding AJG and their total value by quarter
QuarterHoldersValue
Q2 20261,295$54.7B
Q1 20261,248$49.7B
Q4 20251,299$60.6B
Q3 20251,341$69.7B
Q2 20251,379$72.9B
Q1 20251,359$79.0B
Q4 20241,325$65.9B
Q3 20241,203$52.8B
Q2 20241,153$49.1B
Q1 20241,130$46.5B
Q4 20231,082$41.9B
Q3 2023999$42.3B
Q2 2023976$39.9B
Q1 2023951$34.7B
Q4 2022921$34.1B
Q3 2022865$31.2B
Q2 2022823$29.1B
Q1 2022817$31.0B
Q4 2021854$30.1B
Q3 2021775$26.3B
Q2 2021779$24.6B
Q1 2021732$20.6B

Institutions, Q4 2025

Shares, value and share of portfolio for each institution holding Arthur J. Gallagher & Co.; share changes are against Q3 2025.

Institutions holding AJG in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Distillate Capital Partners LLC76,243$19.7M1.02%+21,609+39.6%Added
Life Cycle Investment Partners Ltd76,175$19.7M0.14%+76,175New
Baldwin Brothers Inc75,965$19.7M1.26%−864−1.1%Reduced
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund75,954$19.7M0.16%−40−0.1%Reduced
Ferguson Wellman Capital Management, Inc74,346$19.2M0.31%−38,575−34.2%Reduced
Mountain Pacific Investment Advisers Inc73,731$19.1M3.09%−1,185−1.6%Reduced
Assetmark, Inc73,376$19.0M0.04%+104+0.1%Added
Arizona State Retirement System72,211$18.7M0.10%−2,641−3.5%Reduced
National Bank of Canada71,918$18.6M0.02%−63,353−46.8%Reduced
Point72 Asset Management, L.P.69,387$18.0M0.03%+69,387New
Ilmarinen Mutual Pension Insurance Co68,100$17.6M0.14%00.0%Unchanged
Czech National Bank67,715$17.5M0.11%+2,604+4.0%Added
North Point Portfolio Managers Corp67,595$17.5M2.96%+265+0.4%Added
Brookstone Capital Management67,584$17.5M0.20%+16,268+31.7%Added
State of Michigan Retirement System67,187$17.4M0.08%−2,100−3.0%Reduced
Natixis66,649$17.2M0.07%−38,677−36.7%Reduced
Public Sector Pension Investment Board65,417$16.9M0.06%−5,887−8.3%Reduced
Vident Advisory, LLC65,341$16.9M0.16%+2,533+4.0%Added
Smithbridge Asset Management Inc65,094$16.8M1.44%+32,950+102.5%Added
Factory Mutual Insurance Co64,500$16.7M0.17%+15,000+30.3%Added
Lawson Kroeker Investment Management Inc64,329$16.6M4.95%+1,161+1.8%Added
Nisa Investment Advisors, LLC64,309$16.6M0.05%−1,175−1.8%Reduced
Banco Bilbao Vizcaya Argentaria, S.A.62,750$16.3M0.11%−3,139−4.8%Reduced
MetLife Investment Management62,255$16.1M0.08%−2,036−3.2%Reduced
Ensign Peak Advisors, Inc61,028$15.8M0.03%+2,738+4.7%Added
Commonwealth of Pennsylvania Public School Empls Retrmt Sys59,734$15.5M0.08%−1,828−3.0%Reduced
Taikang Asset Management (Hong Kong) Co Ltd59,708$15.5M1.53%+15,608+35.4%Added
Lighthouse Investment Partners, LLC58,888$15.2M0.51%+58,888New
Daiwa Securities Group Inc.58,643$15.2M0.05%+1,402+2.4%Added
Varma Mutual Pension Insurance Co57,550$14.9M0.09%+7,300+14.5%Added
Mirae Asset Global Investments Co., Ltd.55,276$14.3M0.04%−10,412−15.9%Reduced
Baltimore-Washington Financial Advisors, Inc.55,166$14.3M0.59%−20,568−27.2%Reduced
Running Oak Capital LLC54,672$14.1M1.77%−52−0.1%Reduced
ProShare Advisors LLC54,222$14.0M0.02%+2,767+5.4%Added
Skandinaviska Enskilda Banken AB (publ)54,177$14.0M0.06%+4,105+8.2%Added
Forsta Ap-Fonden53,760$13.9M0.08%−14,940−21.7%Reduced
11 Capital Partners LP53,714$13.9M4.13%−13,360−19.9%Reduced
iA Global Asset Management Inc.52,720$13.6M0.17%−170−0.3%Reduced
GuoLine Advisory Pte Ltd52,400$13.6M1.25%+52,400New
Ci Investments Inc.51,803$13.4M0.06%−106,920−67.4%Reduced
Newport Capital Group, LLC51,338$13.3M8.12%+50.0%Added
Rench Wealth Management, Inc.51,168$13.2M3.90%+733+1.5%Added
HighTower Advisors, LLC50,929$13.2M0.01%−15,411−23.2%Reduced
DnB Asset Management AS50,255$13.0M0.05%+722+1.5%Added
PensionDanmark Pensionsforsikringsaktieselskab49,659$12.9M0.12%+49,659New
Appleton Partners Inc49,292$12.8M0.84%+438+0.9%Added
Mariner, LLC48,785$12.6M0.02%−11,932−19.7%Reduced
South Street Advisors LLC48,309$12.5M1.76%−300−0.6%Reduced
IFM Investors Pty Ltd47,869$12.4M0.10%+329+0.7%Added
Tompkins Financial Corp47,835$12.4M0.96%−172−0.4%Reduced
Amalgamated Bank47,654$12.3M0.09%−1,981−4.0%Reduced
Exencial Wealth Advisors, LLC47,482$12.3M0.39%+14,469+43.8%Added
State of Alaska, Department of Revenue47,367$12.3M0.13%−1,880−3.8%Reduced
Teachers Retirement System of the State of Kentucky46,507$12.0M0.09%+1,730+3.9%Added
Teacher Retirement System of Texas46,123$11.9M0.04%+6,602+16.7%Added
British Columbia Investment Management Corp45,501$11.8M0.06%−99,670−68.7%Reduced
Gotham Asset Management, LLC45,264$11.7M0.04%−1,398−3.0%Reduced
GW&K Investment Management, LLC44,861$11.6M0.10%−190−0.4%Reduced
Capital Group Private Client Services, Inc.44,753$11.6M0.18%−1,263−2.7%Reduced
Pelham Capital Ltd.44,672$11.6M6.15%00.0%Unchanged
FineMark National Bank & Trust44,647$11.6M0.36%−3,186−6.7%Reduced
Busey Wealth Management43,520$11.3M0.30%−1,844−4.1%Reduced
Segment Wealth Management, LLC43,315$11.2M0.65%−263−0.6%Reduced
GWM Advisors LLC43,090$11.2M0.04%−165,800−79.4%Reduced
Mediolanum International Funds Ltd42,528$11.1M0.11%−10,730−20.1%Reduced
Nicola Wealth Management Ltd.42,900$11.1M1.01%00.0%Unchanged
Utah Retirement Systems41,907$10.8M0.10%00.0%Unchanged
USS Investment Management Ltd41,393$10.7M0.05%+194+0.5%Added
Alley Investment Management Company, LLC40,745$10.5M1.23%−21,813−34.9%Reduced
Xponance, Inc.40,491$10.5M0.08%+2,300+6.0%Added
Bank of Nova Scotia40,411$10.5M0.02%−115,828−74.1%Reduced
Verity & Verity, LLC40,198$10.4M0.81%−582−1.4%Reduced
Advisor Group Holdings, Inc.39,938$10.3M0.02%−75,053−65.3%Reduced
Assenagon Asset Management S.A.39,857$10.3M0.02%−321,149−89.0%Reduced
Janney Montgomery Scott LLC39,577$10.2M0.02%−23,791−37.5%Reduced
Cerity Partners LLC39,266$10.2M0.01%+1,974+5.3%Added
Police & Firemen's Retirement System of New Jersey38,915$10.1M0.08%−1,904−4.7%Reduced
O'Shaughnessy Asset Management, LLC38,636$10.0M0.06%−4,431−10.3%Reduced
Talbot Financial, LLC38,547$9.98M0.82%−1,311−3.3%Reduced
Picton Mahoney Asset Management38,507$9.97M0.11%−9,974−20.6%Reduced
Renaissance Investment Group LLC38,311$9.91M2.00%+857+2.3%Added
Andra AP-fonden38,200$9.89M0.12%+21,100+123.4%Added
Pathstone Holdings, LLC37,713$9.76M0.04%−9,075−19.4%Reduced
New York Life Investment Management LLC37,292$9.65M0.08%−95−0.3%Reduced
Tocqueville Asset Management L.P.36,616$9.48M0.14%+9,899+37.1%Added
PBU - The Pension Fund of Early Childhood & Youth Educators36,233$9.38M0.14%+36,233New
Commonwealth Equity Services, LLC36,181$9.36M0.01%−3,975−9.9%Reduced
Bath Savings Trust Co36,033$9.32M0.93%+4,170+13.1%Added
CIBC World Markets Corp35,709$9.24M0.05%+35,709New
CIBC World Markets Inc.35,523$9.19M0.02%+228+0.6%Added
Park Avenue Securities LLC35,377$9.15M0.08%−1,880−5.0%Reduced
Sumitomo Mitsui DS Asset Management Company, Ltd35,127$9.09M0.07%+444+1.3%Added
Brant Point Investment Management LLC35,072$9.08M2.20%00.0%Unchanged
Susquehanna International Group, LLP35,039$9.07M0.01%+11,453+48.6%Added
Baird Financial Group, Inc.34,935$9.04M0.01%+1,086+3.2%Added
CAPROCK Group, Inc.34,445$8.91M0.19%+1,820+5.6%Added
Rathbone Brothers plc34,349$8.89M0.03%−50−0.1%Reduced
Rakuten Investment Management, Inc.33,765$8.88M0.03%−6,194−15.5%Reduced
Nixon Peabody Trust Co34,155$8.84M0.67%+32,431+1,881.1%Added
Trillium Asset Management, LLC33,268$8.82M0.27%−14,552−30.4%Reduced